INS-40909

 [INS-40909] Host names from multiple domains entered.


Cause: 
Node information was entered for two or more nodes that belonged to different domains.

Solution

Public hostname is on different domain than hostname, example: node1.us.oracle.com is hostname but node1.at.oracle.com is selected for public hostname.

OR.


Shouldn't the contents of your /etc/resolv.conf be the same?  ie they will contain the same IP for the DNS server.

If the contents of resolv.conf are the same, then it could be a firewall issue or maybe a permissions issue.  Is this configured the same on both servers?  Can you run a successful nslookup from both servers?

Given to full permission to   /etc/resolv.conf file.

I hope issue resolved..

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